Scattering by anisotropic grains in beryllium mirrors

Conference · Wed Aug 01 00:00:00 EDT 1990

OSTI ID:6522450

Church, E L ^[1]; Takacs, P Z ^[2]; Stover, J C ^[3]

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1. Army Armament Research and Development Command, Dover, NJ (USA)
2. Brookhaven National Lab., Upton, NY (USA)
3. TMA Technologies, Inc., Bozeman, MT (USA)

Scattering from mirror surfaces arises from topographic and non-topographic sources. This paper considers the nontopographic scattering of beryllium mirrors modelled as a collection of randomly oriented bireflective grains. Simple scattering theory shows that this type of scatting scales as {lambda}{sup {minus}2}, rather than as {lambda}{sup {minus}4} for topographic scattering, which means that it is relatively more important at long radiation wavelengths. Estimates of the intensity based an available short-wavelength values of the anisotropic optical constants of beryllium indicate that this type of scattering could dominate the topographic scattering from smooth surfaces at CO{sub 2} wavelengths. 10 refs., 2 figs.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• Sponsoring Organization: USDOD; DOE/ER
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6522450
• Report Number(s): BNL-45154; CONF-900756-52; ON: DE91001724
• Resource Relation: Conference: SPIE's international symposium on optical and optoelectronic applied science and engineering exhibit, San Diego, CA (USA), 8-13 Jul 1990
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BERYLLIUM
ANISOTROPY
MIRRORS
SCATTERING
SCALARS
MATHEMATICAL MODELS
FLUCTUATIONS
OPTICAL PROPERTIES
RADIATIONS
REFLECTIVITY
ROUGHNESS
SCALING LAWS
SURFACES
TOPOGRAPHY
WAVELENGTHS
ALKALINE EARTH METALS
ELEMENTS
METALS
PHYSICAL PROPERTIES
SURFACE PROPERTIES
VARIATIONS
360104* - Metals & Alloys- Physical Properties
657002 - Theoretical & Mathematical Physics- Classical & Quantum Mechanics
656003 - Condensed Matter Physics- Interactions between Beams & Condensed Matter- (1987-)